This is a wooden mechanical pencil, carefully crafted by my middle school son. You can feel the warmth of natural wood in this one-of-a-kind piece. Due to the handmade nature of the product, the wood grain and color will vary from pencil to pencil. Lead diameter: 0.5mm Length: Approximately 14.5cm Material: Black Walnut Please note that this is a handmade item, and there may be small scratches or variations in color. Thank you for your understanding before purchasing.